Combination mold and trimmer for rubber heels, soles, and all mechanical molded rubber goods



1,768,093 COMBINATION MOLD AND TRIMMER FOR RUBBER HEELS, SIOLES, AND ALL MECHANICAL MOLDED RUBBER GOODS June 24, 1930. l J. M. ANDRE Filed nec. 2a, 1925 2 Sheets-Sheet 1 lllllic ll..l llllllllll dal Il?. f I.

||||||||| l iill# 1,768,693 ELS, GOODS June 24, 1930.

CAL MOLDED RUB 28, 192 2 Sheets-Sheet 2 J. M. ANDRE OLD AND TRIMMER FOR RUB R HE ND ALL NAT COMBI SOLES Patented dune 24, 193@ JOSEPH ANDRE, OF MONTELLO, MASSAC-IUSETTS .COMBINATION MOLD AND TR-lVl/IER FOR RBBER-HEELS, SOLES, AND ALL MEGANL CAL MOLDED RUBBER GOODS Application led. December 28, 1925.

This invention relates to improvements in 'a combination mold and trimming devices, particularly in means for trimming excess rubber from rubber heels, soles and all mechanical molded rubber goods of the type illustrated and described in my copending application, Serial No. 149,653, filed November 20, 1926.

An object of this invention is to provide a mold and trimmer for articles such as rubber heels, soles and miscellaneous molded rubber goods, having an upper and lower plate, a movable cavity plate or cavity therebetween, clearance between the upper and lower plate being sufficient to allow suitable movement of the movable cavity plate or cavity and a cutting edge connected with the upper plate, and means for moving the movable cavity plate or cavity beyond the cutting edge.

Further objects of this invention will appear :from the following detailed description of the device and from disclosures in the two sheets of drawings which are herewith made a part of this application.

In the drawings,

Fig. 1 represents a plan view of the heel mold in assembled form disclosing the cam lever in relationship thereto.

Fig. 2 illustrates the end elevationall view of Fig. 1, showing the cam tie rod and the cam levers in relationship to the mold.

Fig. 3 illustrates a sectional view of Fig. 1 taken along line 3-3 showing a heel within the mold just previous to the process of trimming the excess material from the heel.

Fig. l represents a view oi` Fig. 3, disclosing a heel within the mold after the process of trimming the excess material has been completed by means of forcing the movable platel upward toward the rand late.

p Fig. 5 illust-rates a sectional view of Fig.

Serial No. 77,978.

adapted for molding rubber heels, while numeral 2 designates a name plate as desired, ordinarily used in heel molds or the like. Between the rand plate 1 and theJ name plate 2 is positioned a movable plate 3, the movable plate 3 being of a thickness to allow sufficient adjustability between plates 1 and 2 so as to properly separate or trim the excess material 4 from the heel 5 on the operation of the device.

Numeral 6 designates a rand plate locating pin adapted to be suitably held in removable relationship to the device by means of a locating bushing 7, the lower ends of the rand plate locating pin 6 being adapted to be yieldingly supported by means of a locating bushing spring 8 and a locating bushing spring plug 9. Obviously, when the pressure on the top plate 1 is relieved, the spring 8 under compression will materially aid in separating the plates, the locating bushing spring cap being designated by the numeral 10. Plate 3 is adapted to be raised by means of a cam 11, suitably located and keyed to a cam shaft 12 carried in a cam shaft bearing 13, positioned preferably in the name plate 2. Ordinarily, a multiplicity of cams 11 will be required suitably connected together by means of a camV tie rod 14, pivote-d by means of cam tie rod studs 15, vor otherwise to Vcam levers 16, the cam levers 16 being connected to the cam shaft- 12 by means of cam shaft nuts 17.

In operation this invention provides a combination heel mold and trimmer, the heel material 5 being properly located within the mold in the usual manner and the plates 1, 2, and 3 beingsuitably positioned previous to being placed under pressure.' During the molding process excess material from the heel portion will tend to spread eX- teriorally from the upper edge of the heel as clearly disclosed in the perspective view in Fig. 6 and designated by numeral 4, the eX- cess material previous to trimming will tend to accumulate in the spaces 18 as clearly disclosed in Fig. 3. llVhen it is desired to operate the trimming plate 3, the hand lever 19 is placed in interlocking relationship with the cam shaft 12 as at 20, and operated in such a manner that the cam ll will tend to move the plate 3 upward thereby forcing the excess material l above the cutting edge 2l of the rand plate l, which will result in a clean and etiicient separation of the excess material fi from the main heel portion 5.

What I claim is:

l. A combination mold and trimmer' having an upper and lower plate, a movable plate therebetween and havingV a molding aperture therethrough, clearance between the upper and lower plate being suiiicient to allow suitable movement of the movable plate, a cutting edge connected with thev upper plate and adapted to fit slidably in said aperture, means rotatably mounted in the lower plate and engaging the bottom of the movable plate for moving the movable plate to cause the cutting edge to enter said aperture.

2, The combination in a mold and trimmer of an upper plate and a lower plate, of a movable plate therebetween, means between said upper and lower plates for grinding said movable plate rectilinearly from one plate to the other, of a cutting edge connectedv with the upper plate, and of means rotatably mounted in the lower plate and engaging the bottom of the movable plate for moving the movable plate on said grinding means past the cutting edge.

3, In a mold and trimmer, an upper and lower plate, a movable plate therebetween provided with suitable mold openings, clearance between the upper and lower plate being sufficient to allow suitable movement vof the movable plate, a cutting edge connected with the upper plate, means rotatably mounted in the lower plate and in contact'with the bottom of the movable plate for moving the movable plate beyond the cutting edge, and means for operating the last named means.

4. In a mold and trimmer, an upper and lower plate, amovable plate therebetween, provided with suitable mold openings, clearance between the upper and lower plate besuiiioient to allow suitable movement of the movable plate, a cutting edge connected with the upper plate, means for movingthe movable plate beyond the cutting edge, consisting of a cam actuated device.

5. In a mold and trimmer, an upper and lower plate, a movable plate therebetween provided with suitable mold openings, clearance between the upper and lower plate being sufficient to allow suitable movement of the movable plate, a cutting edge connected with the upper plate, means for moving the movable plate beyond the cutting edge, consisting of a cam actuated device, and yielding means for loosening the upper plate from its operative position.

6. A mold comprising a plate having a molding aperture therethrough, complemental members mounted a iixedl distance apart from each other on opposite sides of s aid plate, each adapted to fit with close sliding fit in said aperture, and means for relativelyrr moving said plate and members without rotation to cause one member to enter said aperture and the other to slide out of it to out off material extruded from the mold.

7. In a mold and trimmer, a base plate, a top plate mounted on said base plate at a fixed distance therefrom, a molding member between said plates and cam mechanism rotatable on said base plate and engaging said member to move it from either plate to the other.

8. In a mold and trimmera base plate, a top plate mounted on said base plate at fixed distance therefrom, guides connecting said plates, a molding member slidably mounted on said guides, and cam mechanism rotatable on said baseplate and engaging said member to reciprocate it on said guides. v

9. In. molding apparatus, a base, a top plat-espaced from and supported by said base, a molding plate reciprocable rectilinearly between said base and top plate, a plurality of shafts mounted in said base, cams fixed on each of said shafts and in Contact with one face of said molding plate, and means connecting said shafts to rotate all by and in synchronism with the rotation of any of them. f

l0. The combination set forth in claim 9, in which said means include a parallel linkage connecting each shaft with lall the other shafts. I

In testimony whereof I affix my signature.

JOSEPH M. ANDRE.

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